The hotel has a secretive word-of-mouth policy to attract A-listers and charges around $30,000 per week for a suite.

The hotel us SO exclusive, its website requires a log-in to even view it.

The five men who attacked Kim were wearing police uniforms, and threatened the concierge with guns to let them into Kim’s room, which they did.

The concierge was reportedly handcuffed and at gunpoint as he led them to Kim’s apartment.

They entered Kim's room, threatened her with a weapon, tied her up and locked her in the bathroom.

The men stole a jewellery box worth €6 million ($6.7 million) and a ring worth €4 million ($4.5 million), prompting fears that the valuables were personal ones, and not just jewellery Ms Kardashian was borrowing for fashion week.

An insider said the total worth could be as high as $16 million. The mother-of-two is 'badly shaken but physically unharmed', a spokesperson told DailyMail.com.